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A317696 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Aug 04 2018 20:10:23

%S 21,289,593,16008,464357,12414382,526480617,21681685596,800622189621,

%T 32130855052281,1312119008692568,51836224178847872,

%U 2071718430619769621,83585729339898936754,3347455884395450478055,134104196324870185800023

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A317697.

%H R. H. Hardin, <a href="/A317696/b317696.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..1..0..1..1..1. .0..0..1..0..1..0..1. .0..0..0..1..0..1..0

%e ..0..1..1..0..1..0..1. .0..0..0..0..1..1..1. .0..1..0..1..0..0..0

%e ..0..0..1..0..1..0..0. .0..1..1..0..0..0..0. .0..0..0..1..1..1..1

%e ..1..1..1..1..1..1..1. .0..0..0..1..1..0..1. .1..1..1..1..0..1..0

%e ..1..0..0..0..0..0..1. .0..0..1..1..1..1..1. .1..0..0..1..0..0..0

%Y Cf. A317697.

%K nonn

%O 1,1

%A _R. H. Hardin_, Aug 04 2018

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Last modified April 19 16:38 EDT 2024. Contains 371794 sequences. (Running on oeis4.)